CUKTECH 15 Ultra Power Bank for Laptop, 20,000mAh 140W Portable Charger, Smart Display, External Battery for Outdoor Work and Travel, for iPhone 16/15, MacBook, Samsung, and More (Flight-Approved)

The CUKTECH 15 Ultra stands out with two features: 1. Manual USB-C1 mode selection (IN-only, OUT-only, or auto IN/OUT) — eliminates PD negotiation guesswork when charging another bank or device. Super practical for daisy-chaining. 2. True 165W dual-port input — recharges very fast (often under an hour) while respecting modern thermal limits. 140W output, clear display, solid 20,000mAh capacity, and reliable build. Highly recommended for power users!

An amazing power bank with incredibly fast input, extremely powerful output, great features, good net capacity, and high compatibility. This is the best 20k mAh power bank its price range.

The quality of the power bank is good. Its strongest point is beast mode, which helps charge very quickly. The three out gates are truly unbelievable. It's very easy to use. It would be perfect if it were a little lighter.

Great battery capacity, charge pretty fast as to its capacity, however I took off a star due to its heavy weight and display that I find it not that pleasant to read, but it could be a more subjective viewpoint. The quality is without a doubt.

Its my edc now, I can’t leave it behind

Very good quality, I can give up to 3 charges

Muy buen producto

Fastest charger out there, clean aesthetic

خامات ممتازه وقوة شحن

Excelente batería, incluye un cable de carga rápida y una bolsa de transporte. La mejor que he probado hasta ahora

TL;DR Nice powerbank !! It’s a great product that delivers what it promises. Since I've seen just crappy influencers and not real tech guys review powerbanks these days, I wanted to share my own findings with this product. I didn't want to review the usual suspects so I decided I would try CUCKTECH which seemed interesting! Product is well built, sturdy and with no cracks in the plastics. Included in the product you have a Usb type-c to type-c 1M cable marked to 6A current capacity. Tools used for the test: • WITRN C5 (INA 228 20-bit version 48V) to trigger the voltage and to counter measure the output, • Maynuo DC Programmable Dynamic load M9710 (0-150V 150W) to simulate the charging device and measure the output delivered. • USB 4.0 /Thunderbolt 4 certified 1.5M cable OUTPUT DELIVERY: C1: (refer to img1) is capable of PD 3.1 EPR 28V-5A. I’ve managed to negotiate just 100W PD (20V5A) because my Dell Laptop sadly proprietary maximum charging protocol.. My C5 meter detects PPS 20V3A max on this port C2: (refer to img2) is more limited to 65W PD negotiation, strangely (but it may be instrument error, my C5 finds PPS more capable 20V/5A in C2 than in C1 USB-A: (refer to img3) I don’t own a Xiaomi 120W enabled phone so I cannot attest this claim. I’ve managed just to squeeze 18W via QC protocol to my Samsung S24 and My PocoF2 Pro (Redmi K30 Pro). Though from time to time the phone was internally reporting peaks of 4.5A at 4.5V ~ 20.5W, this never showed on my meter INPUT CAPABILITIES C1: Accepts input of PD3.1 till 140W, I’ve managed to reach about 135W effectively just on this single port alone. C2: Accepts input with PD 3 will 100W, I’ve managed to reach about 87W effectively just on thi single port alone. So if you have a PD3.1 140W enabled charger and you want to charge the Cucktech 15 Ultra more slowly just plug it into the C2 port USB-A: I’ve managed to reach just about 18.7W on this single port alone BEAST MODE: Beast mode allows you to charge the CUCKTECH 15 ULTRA at the incredible chargin power of 165W. To do that you have to: • Use both C1 & C2 by attaching a PD capable charger in both ports, • Beast mode will be activated if the sum of the chargin power between those 2 ports reaches at least 90W • I’ve managed to reach 163W, so very very good here and nicely adherent to CUCKTECH specifications of 165W, by plugging a PD3.1 140W charger in port C1 and my laptop PD3.0 charger in C2. Please see img4 and img5 EFFECTIVE CAPACITY CUCKTECH states that CUCKTECH 15 Ultra has a nominal capacity of 72Wh, typical capacity stated 70.56Wh. This is very nice from CUCKTECH because other vendors do not mention this! CUCKTECH also has embossed the capacity into the shell of the product indicating also that this is “Airline compliant” as many Airline companies usually do not allow Lithium powered Powerbanks of more than 99.99Wh. NOTE: you measure capacity effectively by stating the Wh, NOT the Ah, because Wh takes also voltage in consideration while Ah not. Wh= V x Ah I’ve conducted 3 discharging cycles to assess the capacity. 5V/3A with 12.751Ah (C5)/12.6925Ah(M9710) with 61.922 (C5) / 66.43Wh (IMG 11 & IMG 12) 12V/3A with 5.52306Ah = Total 66.2767Wh (IMG14) 14.4/3A – with 4.59770Ah = Total 66.2069Wh (IMG 13) If requested I could also test it a 20V and 28V For the 12V I’ve conducted a charging cycle 12V/3A so that we can see the efficiency at the exact same voltage and current between charged and discharged. (see img 6, img 9, img 10) At 12V/3A I got 79.574Wh INPUT and 66.2767Wh Output with efficiency 83.24%, very good! GLITCHES: In an occasion the CUCKTECH 15 Ultra charging percentage was going up quickly even if it showed 0.5W input (also the USB meter did show 0.8W input) but on the contrary the time showed for remaining charge was going crazy back and forth with the numbers. Very weird. Input was 5V/2A DCP 1.5 Protocol

I’ve been using the CUKTECH 15 Ultra for a few weeks now, and it has exceeded my expectations. The build quality feels premium and robust, fitting easily into a backpack side pocket despite its high capacity. ​Pros: ​Blazing Fast Charging: It easily handles my MacBook Pro and iPhone simultaneously without breaking a sweat. The 150W total output is no joke. ​Informative Display: The built-in screen is fantastic. It shows real-time wattage, which is very helpful for monitoring battery health and charging speeds. ​Fast Recharging: The power bank itself recharges incredibly quickly if you have a high-wattage wall charger. ​Design: The "Pillar" design makes it much easier to grip than the old, flat brick-style power banks. ​Cons: ​It is a bit heavy, but that is expected for a 20,000mAh+ high-output cell. ​Overall, if you need to keep a laptop and a phone alive during a long day of travel, this is the best bang for your buck on the market right now. Highly recommended.

I have numerous Cuktech power banks. The 24K big boy for holidays and the small 10K for my wife to carry in her handbag. We both have Xiaomi phones that charge at 120W, and ALL Cuktech power banks I've had so far charge at this maximum speed. It has charged literally anything I've thrown at it, laptops, tablets, buds, watches, even my tyre inflator. When this ultra launched I wanted it for the dual charging of it, when you plug to 120W Xiaomi chargers in this thing charges at double the speed, like literally within an hour I had it fully charged from 60% out the box to full. Keep in mind the ultra is a 20K battery cell, so this is a game changer, given most competitors like Anker take overnight to fully charge. Build quality is exceptional and clear tft screen. Ideal for a backpack, and carry on plane safe. I highly recommend this power bank, it is currently the best of the best and THE one to beat!